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diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/VariableBinding.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/VariableBinding.java
new file mode 100644
index 000000000..779c0181c
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+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/VariableBinding.java
@@ -0,0 +1,73 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2011 Association for Decentralized Information Management in
+ * Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.layer0.variable;
+
+import org.simantics.databoard.Datatypes;
+import org.simantics.databoard.binding.StringBinding;
+import org.simantics.databoard.binding.error.BindingException;
+import org.simantics.db.Session;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.request.ResourceURIToVariable;
+import org.simantics.db.layer0.request.VariableURI;
+
+/**
+ * This class binds Variable to StringType
+ *
+ * @author toni.kalajainen
+ */
+public class VariableBinding extends StringBinding {
+
+    Session session;
+
+    public VariableBinding(Session session) {
+        super(Datatypes.STRING);
+        this.session = session;
+    }
+
+    @Override
+    public boolean isImmutable() {
+    	return true;
+    }
+
+	@Override
+	public Object create(String value) throws BindingException {
+		if ( session == null ) throw new BindingException("Cannot create Variable without a Session");
+		try {
+			return session.sync( new ResourceURIToVariable( value ) );
+		} catch (DatabaseException e) {
+			throw new BindingException(e);
+		}
+	}
+
+	@Override
+	public String getValue(Object o) throws BindingException {
+		if ( session == null ) throw new BindingException("Cannot create Variable without a Session");
+		if (o instanceof Variable==false) throw new BindingException("Not a variable");
+		Variable v = (Variable) o;
+		try {
+			return (String) session.sync( new VariableURI( v ) );
+		} catch (DatabaseException e) {
+			throw new BindingException( e );
+		}
+	}
+
+	@Override
+	public void setValue(Object o, String newValue) throws BindingException {
+		throw new BindingException("Cannot set URI to Variable. URI is immutable");
+	}
+
+	@Override
+	public boolean isInstance(Object obj) {
+		return obj instanceof Variable;
+	}
+
+}